DAY 5: EXCEL CHAPTER 2
Sravanthi Lakkimsetty
salakkimsetty@mix.wvu.edu
Aug 31,2015
ANNOUNCEMENTS
• Any Questions regarding MyITLab registration? There
are students who are yet to register in it. (Student ID
Update)
• There is also Open Lab Online
Proctor Sallyanne Fuentes will be available Mondays and Wednesdays
from 7:00pm-9:00pm ET. Proctor Eva Llera will be online Sundays
7:00p-9:00pm ET. Students can go to
http://cs101.wvu.edu/resources/help/open-lab-online/
and get help using Skype's call or chat features.
OVERVIEW
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Relative, absolute and mixed cell references
Functions
Statistical Functions
Date Functions
Logical Functions
IF Function
Nested IF Function
CELL REFERENCES
• Used in formulas so that they can be copied and reused
easily.
• In some cases, we want the references to cells to move
down, or over as we copy the formula.
• In other cases, we do not want the reference to change
even if we do move.
RELATIVE VS ABSOLUTE ADDRESSING
• Relative cell references indicate a cell’s relative location from the
cell containing the formula; the cell reference changes when the
formula is copied
• Absolute cell references indicates a cell’s specific location; the cell
reference does not change when you copy the formula
- Indicated by dollar ($) signs in front of the column letter and row
number
- Most often used when the value need not change
• Mixed cell references contains both an absolute and relative cell
references in a formula
CELL REFERENCES(CONTD)
Relative reference
Column absolute mixed reference
A1
$A1
Row absolute mixed reference
Absolute reference
A$1
$A$1
AVOIDING CIRCULAR REFERENCES
• A circular reference error occurs if a formula refers to
itself
FUNCTION
• Function is a predefined formula that performs a
calculation.
• Syntax is a set of rules that govern the structure and
components for properly entering a function.
• An Argument is an input, such as cell reference or
value, needed to complete a function.
• A function begins with the equal sign (=) followed by the
function name and arguments in parentheses
Example: =SUM(A1:A3)
INSERTING A FUNCTION
• When a function is typed, Formula AutoComplete
displays a list of functions matching the partial entry
• Use the Insert Function dialog box to search for a
function or select one from a list.
FUNCTION CATEGORIES AND
DESCRIPTION
Category
Description
Compatibility
Contains functions compatible with Excel 2007 and earlier.
Cube
Returns values based on data in a cube.
Database
Analyses records stored in a database format in Excel.
Date & Time
Provides methods for manipulating date and time values.
Engineering
Calculates values commonly used by engineers.
Financial
Performs financial calculations.
Information
Provides information about the contents of a cell.
Logical
Performs logical tests and returns the value of tests.
Lookup &
Reference
Looks up values, creates links to cells, provides references
to cells.
Math & Trig
Performs standard math and trigonometry functions.
Statistical
Performs common statistical calculations.
Text
Manipulates text strings.
SUM
• SUM is the most commonly used function
– represented by a sigma ()
– Adds values within a specified range
• Syntax refers to the grammatical structure of a formula
– Must adhere to stated structure of formula
• Arguments are values ─ used as input and returned as
output
Function Name
• Example: = Sum (B1:B10)
Arguments
AUTOSUM
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Automates the SUM function
Click the cell where you want the result
Click AutoSum button
Select the range of cells you want to sum
Press Enter to complete
BASIC STATISTICAL FUNCTIONS
• Perform a variety of calculations to aid in decision
making process
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AVERAGE calculates the average of a range of numbers
MEDIAN finds the midpoint value in a range
MIN calculates the minimum value in a range
MAX calculates the maximum value in a range
COUNT counts the number of values within a range
COUNT
• Statistical Functions – COUNT, COUNTA
• COUNT function counts the number of cells in a range
that contain numerical data.
• COUNTA function counts the number of cells in a range
that are not blank.
• COUNTBLANK counts the number of blanks in the given
range.
• Ex: COUNT(C6:C24)
COUNTA(E2:E10)
COUNTBLANK(J9:J16)
DATE/TIME FUNCTIONS
Function Syntax
Description
=TODAY()
Displays today’s date: month, day, year
=NOW()
Displays today’s date and current military time
=DATE(year,month,day)
Returns serial number for a date
=EDATE(start_date,months)
Displays serial number of a date a specified
number of months in future or past
=DAY(serial_number)
Displays the day within a month for a serial number
=MONTH(serial_number)
Returns the month for a serial number
=YEAR(serial_number)
Identifies the year for a serial number
LOGICAL FUNCTIONS
• IF function
• Logical Operators
Operator
Description
=
Equal to
<>
Not equal to
<
Less than
>
Greater than
<=
Less than or equal to
>=
Greater than or equal to
IF FUNCTION
• Used to determine whether a given condition has been
satisfied or not
• When the condition is met, the formula performs one
task; when it is not met, the formula performs another
task
• Has three arguments:
– a condition tested to determine if it is true or false
– the resulting value if the condition is true
– the resulting value if the condition is false
IF (CONTD.)
• Syntax:
IF(condition, value_if_true, value_if_false)
Value when condition is false
Value when condition is true
Condition is true or false
• IF(H4=100, “Good”,
“Bad”)